/**
 * @author caesar
 * @date 2025/7/23
 * @Description:
 * @apiNote
 */
public class Main {
    public static void main(String[] args) {
        String s1 = "abc";
        String s2 = "xyz";

            show(s1,s2);
        System.out.println(s1+"---------"+s2);
    }

    public static void show(String s1,String s2){

        s1 = s2+s1+"Q";
        s2 = "w"+s1;
    }
}